WO2005090145A1 - Cross member or structural component for a motor vehicle - Google Patents

Cross member or structural component for a motor vehicle Download PDF

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Publication number
WO2005090145A1
WO2005090145A1 PCT/EP2005/002791 EP2005002791W WO2005090145A1 WO 2005090145 A1 WO2005090145 A1 WO 2005090145A1 EP 2005002791 W EP2005002791 W EP 2005002791W WO 2005090145 A1 WO2005090145 A1 WO 2005090145A1
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WO
WIPO (PCT)
Prior art keywords
cross member
member according
cross
circumference
section
Prior art date
Application number
PCT/EP2005/002791
Other languages
German (de)
French (fr)
Inventor
Christian Merkle
Walter Wolf
Original Assignee
Behr Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr Gmbh & Co. Kg filed Critical Behr Gmbh & Co. Kg
Priority to DE502005004941T priority Critical patent/DE502005004941D1/en
Priority to US10/592,507 priority patent/US20070194605A1/en
Priority to EP05716111A priority patent/EP1730016B1/en
Publication of WO2005090145A1 publication Critical patent/WO2005090145A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B62D25/142—Dashboards as superstructure sub-units having ventilation channels incorporated therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B62D25/145—Dashboards as superstructure sub-units having a crossbeam incorporated therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B62D29/004—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material the metal being over-moulded by the synthetic material, e.g. in a mould

Definitions

  • the invention relates to a cross member or a structural component for a motor vehicle according to the preamble of claim 1.
  • a cross member for a motor vehicle which consists of an upper half-shell and a lower half-shell which have tabs at their mutually facing ends which are glued to one another by an adhesive.
  • a bracket is fastened to the crossmember using several screws. The screws are glued after screwing.
  • a reinforcement designed as a tube can be attached to the cross member, the cross section of the tube being modified at its ends in order to simplify the attachment to the cross member.
  • cross members or other structural components are known, to which holders are welded or attached in some other way.
  • the weight is increased and the additional work step leads to an increase in the production costs.
  • a cross member which has a first cross section with a first surface and a first circumference in a central region and a second cross section with a second surface and a second circumference in at least one of its two end regions, the ratio of the first surface to the first extent is greater than the ratio of the second area to the second extent.
  • the cross member is preferably flattened in at least one of its end regions and / or wider than in its central region. Such a configuration forms a connection point that is rigid in terms of torque.
  • the production can be carried out in a simple manner by means of forming.
  • the forming can preferably be carried out by deep drawing, stamping with dies, internal or external high-pressure forming, magnetic forming with the simultaneous molding of support elements, such as sleeves, or hammers.
  • support elements such as sleeves, or hammers.
  • the number of components can be kept low, one or more channels carrying media being integrated and / or the cavities being used as cable channels. This enables inexpensive production.
  • the cross member is preferably formed by two half-shells which are connected to one another in a known manner. Stiffening elements can be provided in one or both half-shells.
  • the half-shells are preferably extruded or rolled profiles which, in the undeformed state, have a continuous profile and at least one of which is formed at least in one of its end regions.
  • At least one support body is preferably arranged in the interior of the cross member in the unformed end area, in particular at least one screw penetrating the cross member and the support body arranged therein.
  • the support body is preferably formed by a sleeve, but other configurations are also possible.
  • two or more depressions " extending in the longitudinal direction of the crossmember and projecting into the interior of the crossmember are provided. These enable optimum stiffening and offer good attachment options.
  • the cross member can have ribs running in the longitudinal direction, preferably at least four ribs.
  • At least one cavity for the passage of a medium, such as air, is preferably provided in the cross member, so that the cross member forms part of the motor vehicle ventilation system and no additional installation space for air ducts is required.
  • the cross member can have stiffening elements in its interior, which is, for example, a plastic structure, preferably with cross-shaped ribs or a honeycomb-like structure. This can be molded on relatively easily and significantly increases the rigidity with a relatively low weight. In spite of the stiffening elements, channels for a medium to be carried out can be provided in the interior of the cross member.
  • FIG. 1 is a perspective view of a cross member according to the first embodiment without attachments
  • FIG. 2 is a perspective view of the cross member of FIG. 1 with elements attached thereto
  • FIG. 3 shows a perspective detailed view of an end region of a half-shell of the cross member of FIG. 1,
  • FIG. 4 shows another perspective detailed view of the end region shown in FIG. 3,
  • FIG. 5 shows a perspective detailed view of an end region of the other half shell of the cross member of FIG. 1,
  • FIG. 6 shows another perspective detailed view of the end region shown in FIG. 5
  • FIG. 7 shows a section through the cross member of FIG. 1
  • 8 shows a section through an end region of a cross member according to the second exemplary embodiment before the shaping process
  • FIG. 10 is a perspective view of the end region of the cross member according to the second embodiment
  • FIG. 15 is a perspective view of the end portion of FIG. 14 after the forming process
  • 16 shows a section through an end region of a cross member according to the sixth exemplary embodiment before the shaping process
  • 17 shows a section through the end region of FIG. 16 after the shaping process
  • FIG. 19 is a plan view of a first hollow cylindrical support element
  • FIG. 20 is a plan view of a second hollow cylindrical support element
  • FIG. 21 is a perspective view of a third support element
  • FIG. 22 is a perspective view of a fourth support element
  • FIG. 23 is a perspective view of a fifth support element
  • FIG. 24 is a perspective view of a sixth support member
  • FIG. 25 shows a section through an end region of a cross member with the illustration of a screw.
  • a cross member 1 of a motor vehicle with integrated air duct is formed according to the first embodiment by a first half-shell 2 and a second half-shell 3.
  • This is in each case a metal structure which is produced by means of deep drawing or extrusion and subsequent processing, with the longitudinal ends being formed, among other things.
  • the cross member is preferably formed in one piece.
  • the interior between the two half-shells 2 and 3 is hollow according to the present embodiment, so that the passage of air is possible.
  • Part of the ventilation system is thus integrated in the cross member 1.
  • other media can also be passed through the cross member 1.
  • the cross member 1 has openings 4 arranged transversely to its longitudinal extent for introducing and discharging the air. Furthermore, further elements are attached to the cross member 1, as shown in FIG. 2.
  • Fig. 7 shows the area of the steering column 5.
  • the connection between the steering column 5 and the cross member 1 by means of extruded profiles 6, which are attached to the parts to be connected, in the present case by means of screw connections.
  • the ends of the cross member 1 are widened as a result of the forming process, so that they serve as a stiffening element.
  • the ratio of a first area and a first circumference in an average cross section is smaller than the ratio of a second area and a second circumference in the two end regions.
  • the widened design of the end areas enables a torque-resistant connection.
  • the half-shells have a cross-rib-like plastic structure, as described, for example, in DE 100 65 219 C1 or DE 101 25 559 A1.
  • the plastic structure is molded onto the respective metal structure and serves to stiffen the cross member.
  • the configuration of the cross member corresponds to that of the first exemplary embodiment described above.
  • FIG. 8 shows the cross section of an end region of a tubular extruded profile, which forms a cross member 1 according to the second exemplary embodiment, before and FIG. 9 after the forming.
  • the central, significantly larger area of the cross member 1 remains unchanged in its circular cross section.
  • Each of the two end regions has two straight regions running essentially parallel to one another and two regions connecting these straight regions in a radius, so that the ratio of a first area and a first circumference in a central cross section of the cross member 1 is smaller than the ratio of a second one Area and a second perimeter in the two end areas.
  • the widened and flattened configuration of the end regions enables, in accordance with the first exemplary embodiment, a torque-resistant connection.
  • support bodies 7, in the form of sleeves are provided according to the variant of the second embodiment shown in FIG. 11, which extend in the form of sleeves in the end regions are provided for the purpose of attaching the cross member 1 are arranged in the interior of the cross member 1.
  • the shape of the cross member 1 corresponds to that of the second embodiment described above.
  • FIG. 12 shows the cross section of a widened and flattened end region of a cross member 1 according to the third exemplary embodiment.
  • the starting material for this corresponds to the extruded profile shown in FIG. 8.
  • This is also reshaped in both end regions of the cross member 1 such that the ratio of a first surface and a first circumference in a central cross section of the cross member 1 is smaller than the ratio of a second surface and a second circumference in the two end regions.
  • two in the longitudinal direction of the cross member 1 are in each of the two flattened sides in both end regions. extending into the interior of the cross member 1 provided depressions which serve to increase the rigidity.
  • FIG. 13 shows the end region of a cross member 1 according to the fourth exemplary embodiment, which is flattened by means of forming starting from a hollow cylindrical profile which is obtained in the central region of the cross member 1 in such a way that two cavities are formed at the outer ends of each end region , which are divided by an area in which the two side walls are straight and abut one another.
  • FIG. 14 shows an extruded profile in the form of a tube with ribs 8 extending inwards and running in the longitudinal direction. This is deformed to form the end regions of the cross member 1 in accordance with the second exemplary embodiment, which results in the configuration shown in FIG. 15.
  • the ribs 8 can, at the same time, be used as supporting elements, which ensure a minimum distance between the walls and prevent the statics from collapsing when a component is screwed together. Furthermore, with a corresponding design of the ribs 8, these can also serve as air guiding elements and / or the positioning of lines running in the cross member 1. Screw fastenings for the cross member 1 are in particular arranged approximately centrally between two ribs 8 arranged on opposite sides.
  • the sixth and seventh exemplary embodiment relates to a cross member 1 comprising two trough-like half-shells 2 and 3 with longitudinally extending, outwardly extending edges.
  • the half-shells 2 and 3 each consist of a rolled section or deep-drawn parts.
  • 16 shows the undeformed central region of the respective cross member 1, which is hexagonal with approximately the same side lengths (honeycomb-like).
  • the end regions are shaped in such a way that the bottom surfaces of the half-shells 2 and 3 are arranged closer to one another than in the undeformed state, but there is still a distance between the bottom surfaces.
  • the end regions are reshaped in such a way that two honeycomb-like regions are formed which are spaced somewhat apart from one another.
  • FIG. 19 shows a plan view of a first hollow-cylindrical support element with a closed profile, as can be produced, for example, by cutting off a continuous tubular profile
  • FIG. 20 shows a plan view of a second hollow-cylindrical support element with a profile that is open on one side.
  • FIG. 21 shows a support element which is designed for two support points.
  • two closed hollow cylindrical areas are connected via a continuous intermediate area, so that the intermediate area is one can perform additional stiffening function.
  • Fig. 22 shows a support element, which is also suitable for two support points, which is a laterally open profile, which is held between the inner walls of the cross member only by tightening the screws.
  • two U-shaped areas are provided in this part, which is designed, for example, as an extruded element, rolled profile section, bent or bent part.
  • Fig. 23 shows a square profile with transverse bores for receiving the screws, which serves as a support element.
  • FIG. 24 shows a casting which corresponds to the support element from FIG. 21. This can be, for example, a pure plastic part or a plastic part in which two metal sleeves are injected. Further functions can also be integrated into such components, such as, for example, deflecting the air to side outlets.
  • FIG. 25 shows a section through an end region of a cross member 1 which has three cavities which extend in the longitudinal direction of the cross member 1 and which are separated from one another by contact areas of the two half-shells 2 and 3 forming the cross member 1. Bores are provided in the area of the two outer cavities, through which a screw serving for fastening is inserted (only shown on the left).
  • the half-shell 2 is provided with an index 9 in the shape of a knob in the central region and the half-shell 3 with an index 10 in a continuous form.
  • flanks of the side cavities in the end areas should be as steep as possible and only a short distance from the neighboring screw.
  • the side walls to the left and right of the screw can take over the function of the support body, so that support elements, as shown in FIGS. 19 to 24, can optionally be dispensed with.
  • a slightly longer screw results in better tensioning of the connection than with a thin flange and short screw.

Abstract

The invention relates to a cross member (1), in particular for a motor vehicle. The central region of said cross member (1) has a first cross-section with a first surface area and a first circumference and at least one of the two end regions comprises a second cross-section with a second surface area and a second circumference. The ratio of the first surface area to the first circumference is greater than the ratio of the second surface area to the second circumference.

Description

Querträger oder Strukturbauteil für ein Kraftfahrzeug Cross member or structural component for a motor vehicle
Die Erfindung betrifft einen Querträger oder ein Strukturbauteil für ein Kraftfahrzeug gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a cross member or a structural component for a motor vehicle according to the preamble of claim 1.
Aus der DE 102 21 654 A1 ist ein Querträger für ein Kraftfahrzeug bekannt, der aus einer oberen Halbschale und einer unteren Halbschale besteht, die an ihren einander zugewandten Enden Laschen aufweisen, die durch einen Klebstoff miteinander verklebt sind. Zur Befestigung von Elementen, wie bei- spielsweise der Lenksäule, ist am Querträger ein Halter mittels mehrerer Schrauben befestigt. Die Schrauben sind nach dem Verschrauben verklebt.From DE 102 21 654 A1 a cross member for a motor vehicle is known which consists of an upper half-shell and a lower half-shell which have tabs at their mutually facing ends which are glued to one another by an adhesive. To fasten elements such as the steering column, a bracket is fastened to the crossmember using several screws. The screws are glued after screwing.
Am Querträger kann eine als Rohr ausgebildete Verstärkung angebracht sein, wobei das Rohr an seinen Enden zwecks Vereinfachung der Anbrin- gung am Querträger in seinem Querschnitt verändert sein kann.A reinforcement designed as a tube can be attached to the cross member, the cross section of the tube being modified at its ends in order to simplify the attachment to the cross member.
Ferner sind Querträger oder andere Strukturbauteile bekannt, an denen Halter angeschweißt oder auf sonstige Weise angebracht sind. In Folge der Materialverdoppelung wird das Gewicht erhöht und der zusätzliche Arbeits- gang führt zu einer Erhöhung der Herstellungskosten.Furthermore, cross members or other structural components are known, to which holders are welded or attached in some other way. As a result of the doubling of the material, the weight is increased and the additional work step leads to an increase in the production costs.
BESTATIGUNGSKOPIE Derartige Querträger lassen jedoch noch Wünsche offen, insbesondere in Hinblick auf das Gewicht und die Steifigkeit der Anbindungsstelle.BESTATIGUNGSKOPIE However, such cross members still leave something to be desired, especially with regard to the weight and the rigidity of the connection point.
Es ist Aufgabe der Erfindung, einen verbesserten Querträger zur Verfügung zu stellen.It is an object of the invention to provide an improved cross member.
Diese Aufgabe wird gelöst durch einen Querträger oder ein Strukturbauteil mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche. Der Einfachheit halber wird hierauf im Fol- genden lediglich auf einen Querträger Bezug genommen, jedoch kann ein entsprechend ausgebildetes Element auch an anderen Stellen als sonstiges Strukturbauteil verwendet werden.This object is achieved by a cross member or a structural component with the features of claim 1. Advantageous refinements are the subject of the dependent claims. For the sake of simplicity, only a cross member is referred to in the following, but a correspondingly designed element can also be used in other places as another structural component.
Erfindungsgemäß ist ein Querträger vorgesehen, der in einem mittleren Be- reich einen ersten Querschnitt mit einer ersten Fläche und einem ersten Umfang und in mindestens einem seiner beiden Endbereiche einen zweiten Querschnitt mit einer zweiten Fläche und einem zweiten Umfang aufweist, wobei das Verhältnis von erster Fläche zu erstem Umfang größer als das Verhältnis von zweiter Fläche zu zweitem Umfang ist. Dabei ist der Querträ- ger bevorzugt in mindestens einem seiner Endbereiche abgeflacht und/oder breiter als in seinem mittleren Bereich ausgebildet. Eine derartige Ausgestaltung bildet eine momentensteife Anbindungsstelle. Die Herstellung kann dabei auf einfache Weise mittels Umformen erfolgen. Das Umformen kann vorzugsweise mittels Tiefziehen, Prägen mit Formstempeln, Innen- oder Au- ßenhochdruck-Umformen, Magnet-Umformen bei gleichzeitigem Einformen von Stützelementen, wie beispielsweise Hülsen, oder Hämmern erfolgen. Eine derartige Ausgestaltung bietet große gestalterische Freiheiten bei guter Integrierbarkeit. Die Anzahl der Bauteile kann gering gehalten werden, wobei ein oder mehrere medienführende Kanäle integriert und/oder die Hohlräume als Kabelkanäle genutzt werden können. Dies ermöglicht eine kostengünstige Herstellung. Bevorzugt wird der Querträger durch zwei Halbschalen gebildet, die miteinander auf bekannte Weise verbunden sind. Dabei können in einer oder beiden Halbschalen versteifende Elemente vorgesehen sein.According to the invention, a cross member is provided which has a first cross section with a first surface and a first circumference in a central region and a second cross section with a second surface and a second circumference in at least one of its two end regions, the ratio of the first surface to the first extent is greater than the ratio of the second area to the second extent. The cross member is preferably flattened in at least one of its end regions and / or wider than in its central region. Such a configuration forms a connection point that is rigid in terms of torque. The production can be carried out in a simple manner by means of forming. The forming can preferably be carried out by deep drawing, stamping with dies, internal or external high-pressure forming, magnetic forming with the simultaneous molding of support elements, such as sleeves, or hammers. Such a configuration offers great freedom of design with good integrability. The number of components can be kept low, one or more channels carrying media being integrated and / or the cavities being used as cable channels. This enables inexpensive production. The cross member is preferably formed by two half-shells which are connected to one another in a known manner. Stiffening elements can be provided in one or both half-shells.
Die Halbschalen sind vorzugsweise Strangpress- oder Walzprofile, die in unverformten Zustand ein durchgehendes Profil aufweisen und von denen zumindest eine zumindest in einem ihrer Endbereiche umgeformt ist.The half-shells are preferably extruded or rolled profiles which, in the undeformed state, have a continuous profile and at least one of which is formed at least in one of its end regions.
Zur Abstandswahrung zwischen den Wandbereichen des Querträgers in seinem umgeformten Endbereich ist bevorzugt im ungeformten Endbereich mindestens ein Stützkörper im Innenraum des Querträgers angeordnet, wobei insbesondere mindestens eine Schraube den Querträger und den hierin angeordneten Stützkörper durchdringt. Der Stützkörper ist bevorzugt durch eine Hülse gebildet, jedoch sind auch andere Ausgestaltungen möglich.To maintain distance between the wall areas of the cross member in its deformed end area, at least one support body is preferably arranged in the interior of the cross member in the unformed end area, in particular at least one screw penetrating the cross member and the support body arranged therein. The support body is preferably formed by a sleeve, but other configurations are also possible.
Bevorzugt sind in mindestens einem Endbereich auf mindestens einer der beiden abgeflachten Seiten des Querträgers zwei oder mehr sich in Längsrichtung des Querträgers erstreckende und in den Innenraum des Querträ- gers ragende Vertiefungen "vorgesehen. Diese ermöglichen eine optimale Versteifung und bieten gute Anbringungsmöglichkeiten.Preferably, in at least one end region on at least one of the two flattened sides of the crossmember, two or more depressions " extending in the longitudinal direction of the crossmember and projecting into the interior of the crossmember are provided. These enable optimum stiffening and offer good attachment options.
Der Querträger kann zur Erhöhung der Steifigkeit in Längsrichtung verlaufende Rippen, vorzugsweise mindestens vier Rippen, aufweisen.To increase the rigidity, the cross member can have ribs running in the longitudinal direction, preferably at least four ribs.
Im Querträger ist bevorzugt mindestens ein Hohlraum zum Durchführen eines Mediums, wie beispielsweise Luft, vorgesehen, so dass der Querträger einen Teil des Kraftfahrzeug-Belüftungssystems bildet und kein zusätzlicher Bauraum für Luftkanäle erforderlich ist. Zur Erhöhung der Steifigkeit kann der Querträger in seinem Innenraum versteifende Elemente aufweisen, wobei es sich beispielsweise um eine Kunst- stoffstruktur, vorzugsweise mit kreuzförmig verlaufenden Rippen oder einer wabenartigen Struktur, handelt. Diese kann relativ einfach angespritzt wer- 5 den und erhöht die Steifigkeit deutlich bei relativ geringem Gewicht. Trotz der versteifenden Elemente können im Innenraum des Querträgers Kanäle für ein durchzuführendes Medium vorgesehen sein.At least one cavity for the passage of a medium, such as air, is preferably provided in the cross member, so that the cross member forms part of the motor vehicle ventilation system and no additional installation space for air ducts is required. To increase the rigidity, the cross member can have stiffening elements in its interior, which is, for example, a plastic structure, preferably with cross-shaped ribs or a honeycomb-like structure. This can be molded on relatively easily and significantly increases the rigidity with a relatively low weight. In spite of the stiffening elements, channels for a medium to be carried out can be provided in the interior of the cross member.
Im Folgenden wird die Erfindung anhand von mehreren Ausführungsbei- 10 spielen, teilweise mit Varianten, unter Bezugnahme auf die Zeichnung im Einzelnen erläutert. In der Zeichnung zeigen:In the following, the invention is explained in detail on the basis of several exemplary embodiments, some with variants, with reference to the drawing. The drawing shows:
Fig. 1 eine perspektivische Ansicht eines Querträgers gemäß dem ersten Ausführungsbeispiel ohne Anbauten, 15 Fig. 2 eine perspektivische Ansicht des Querträgers von Fig. 1 mit hieran angebrachten Elementen,1 is a perspective view of a cross member according to the first embodiment without attachments, FIG. 2 is a perspective view of the cross member of FIG. 1 with elements attached thereto,
Fig. 3 eine perspektivische Detailansicht eines Endbereichs einer -20- Halbschale des Querträgers von Fig. 1 ,3 shows a perspective detailed view of an end region of a half-shell of the cross member of FIG. 1,
Fig. 4 eine andere perspektivische Detailansicht des in Fig. 3 dargestellten Endbereichs,4 shows another perspective detailed view of the end region shown in FIG. 3,
25 Fig. 5 eine perspektivische Detailansicht eines Endbereichs der anderen Halbschale des Querträgers von Fig. 1 ,5 shows a perspective detailed view of an end region of the other half shell of the cross member of FIG. 1,
Fig. 6 eine andere perspektivische Detailansicht des in Fig. 5 dargestellten Endbereichs, 30 Fig. 7 einen Schnitt durch den Querträger von Fig. 1 , Fig. 8 einen Schnitt durch einen Endbereich eines Querträgers gemäß dem zweiten Ausführungsbeispiel vor dem Umformvorgang,6 shows another perspective detailed view of the end region shown in FIG. 5, FIG. 7 shows a section through the cross member of FIG. 1, 8 shows a section through an end region of a cross member according to the second exemplary embodiment before the shaping process,
Fig. 9 einen Fig. 8 entsprechenden Schnitt durch den Querträger nach dem Umformvorgang,9 a section corresponding to FIG. 8 through the cross member after the forming process,
Fig. 10 eine perspektivische Ansicht des Endbereich des Querträ- gers gemäß dem zweiten Ausführungsbeispiel,10 is a perspective view of the end region of the cross member according to the second embodiment,
Fig. 11 eine Variante des zweiten Ausführungsbeispiel mit Stützkörpern,11 shows a variant of the second exemplary embodiment with supporting bodies,
Fig. 12 einen Schnitt durch den Endbereich eines Querträgers gemäß dem dritten Ausführungsbeispiel,12 shows a section through the end region of a cross member according to the third exemplary embodiment,
Fig. 13 einen Schnitt durch den Endbereich eines Querträgers gemäß dem vierten Ausführungsbeispiel,13 shows a section through the end region of a cross member according to the fourth exemplary embodiment,
Fig. 14 einen Schnitt durch einen Endbereich eines Querträgers gemäß dem fünften Ausführungsbeispiel vor dem Umformvorgang,14 shows a section through an end region of a cross member according to the fifth exemplary embodiment before the shaping process,
Fig. 15 eine perspektivische Ansicht des Endbereichs von Fig. 14 nach dem Umformvorgang,15 is a perspective view of the end portion of FIG. 14 after the forming process,
Fig. 16 einen Schnitt durch einen Endbereich eines Querträgers gemäß dem sechsten Ausführungsbeispiel vor dem Um- formvorgang, Fig. 17 einen Schnitt durch den Endbereich von Fig. 16 nach dem Umformvorgang,16 shows a section through an end region of a cross member according to the sixth exemplary embodiment before the shaping process, 17 shows a section through the end region of FIG. 16 after the shaping process,
Fig. 18 einen Schnitt durch den Endbereich eines Querträgers ge- maß dem siebten Ausführungsbeispiel,18 shows a section through the end region of a cross member in accordance with the seventh exemplary embodiment,
Fig. 19 eine Draufsicht eines ersten hohlzylindrischen Stützelements, Fig. 20 eine Draufsicht eines zweiten hohlzylindrischen Stützelements,19 is a plan view of a first hollow cylindrical support element, FIG. 20 is a plan view of a second hollow cylindrical support element,
Fig. 21 eine perspektivische Ansicht eines dritten Stützelements, Fig. 22 eine perspektivische Ansicht eines vierten Stützelements,21 is a perspective view of a third support element, FIG. 22 is a perspective view of a fourth support element,
Fig. 23 eine perspektivische Ansicht eines fünften Stützelements,23 is a perspective view of a fifth support element,
Fig. 24 eine perspektivische Ansicht eines sechsten Stützelements, und24 is a perspective view of a sixth support member, and
Fig. 25 einen Schnitt durch einen Endbereich eines Querträgers mit Darstellung einer Schraube.25 shows a section through an end region of a cross member with the illustration of a screw.
Eine Querträger 1 eines Kraftfahrzeugs mit integrierter Luftführung wird gemäß dem ersten Ausführungsbeispiel durch eine erste Halbschale 2 und eine zweite Halbschale 3 gebildet. Hierbei handelt es sich jeweils um eine Metallstruktur, die mittels Tiefziehen oder Strangpressen und nachfolgendem Bearbeiten, wobei unter anderem die längsseitigen Enden umgeformt wer- den, hergestellt ist. Im Falle des Strangpressens ist der Querträger bevorzugt einstückig ausgebildet. An den Längsseiten der Halbschalen 2 und 3 sind jeweils nach außen abstehende Ränder vorgesehen, die in Anlage miteinander gebracht und auf bekannte Weise zusammengefügt werden. Der Innenraum zwischen den beiden Halbschalen 2 und 3 ist gemäß dem vorliegenden Ausführungsbeispiel hohl ausgebildet, so dass die Durchführung von Luft möglich ist. Damit ist ein Teil des Belüftungssystems in den Querträger 1 integriert. Anstelle oder neben Luft können auch andere Medien durch den Querträger 1 geleitet werden. Der Querträger 1 weist quer zu seiner Längserstreckung angeordnete Öffnungen 4 zum Ein- und Ausleiten der Luft auf. Ferner sind am Querträger 1 weitere Elemente angebracht, wie in Fig. 2 dar- gestellt.A cross member 1 of a motor vehicle with integrated air duct is formed according to the first embodiment by a first half-shell 2 and a second half-shell 3. This is in each case a metal structure which is produced by means of deep drawing or extrusion and subsequent processing, with the longitudinal ends being formed, among other things. In the case of extrusion, the cross member is preferably formed in one piece. On the long sides of the half-shells 2 and 3 outwardly projecting edges are provided, which are brought into contact with one another and joined together in a known manner. The interior between the two half-shells 2 and 3 is hollow according to the present embodiment, so that the passage of air is possible. Part of the ventilation system is thus integrated in the cross member 1. Instead of or in addition to air, other media can also be passed through the cross member 1. The cross member 1 has openings 4 arranged transversely to its longitudinal extent for introducing and discharging the air. Furthermore, further elements are attached to the cross member 1, as shown in FIG. 2.
Fig. 7 zeigt den Bereich der Lenksäule 5. Hierbei erfolgt die Verbindung zwischen der Lenksäule 5 und dem Querträger 1 mittels Strangpressprofilen 6, die an den zu verbindenden Teilen angebracht sind, vorliegend mittels Schraubverbindungen.Fig. 7 shows the area of the steering column 5. Here, the connection between the steering column 5 and the cross member 1 by means of extruded profiles 6, which are attached to the parts to be connected, in the present case by means of screw connections.
Die Enden des Querträgers 1 sind in Folge des Umformvorgangs verbreitert ausgebildet, so dass sie als versteifendes Element dienen. Dadurch ergibt sich, dass das Verhältnis einer ersten Fläche und einem ersten Umfang in einem mittleren Querschnitt -kleiner als das Verhältnis einer zweiten Fläche und einem zweiten Umfang in den beiden Endbereichen ist. Die verbreiterte Ausgestaltung der Endbereiche ermöglicht eine momentensteife Anbindung.The ends of the cross member 1 are widened as a result of the forming process, so that they serve as a stiffening element. As a result, the ratio of a first area and a first circumference in an average cross section is smaller than the ratio of a second area and a second circumference in the two end regions. The widened design of the end areas enables a torque-resistant connection.
Gemäß einer nicht in der Zeichnung dargestellten Variante weisen die Halb- schalen eine kreuzrippenartige Kunststoffstruktur auf, wie beispielsweise in der DE 100 65 219 C1 oder der DE 101 25 559 A1 beschrieben. Die Kunststoffstruktur ist an die jeweilige Metallstruktur angespritzt und dient der Versteifung des Querträgers. Ansonsten entspricht die Ausgestaltung des Querträgers der des zuvor beschriebenen ersten Ausführungsbeispiels. Fig. 8 zeigt den Querschnitt eines Endbereichs eines rohrförmigen Strangpressprofils, das einen Querträger 1 gemäß dem zweiten Ausführungsbeispiel bildet, vor und Fig. 9 nach dem Umformen. Der mittlere, deutlich größere Bereich des Querträgers 1 bleibt in seinem kreisförmigen Querschnitt un- verändert. Jeder der beiden Endbereiche weist zwei im Wesentlichen parallel zueinander verlaufende gerade Bereiche und zwei diese geraden Bereiche in einem Radius verbindende Bereiche auf, so dass wiederum das Verhältnis einer ersten Fläche und einem ersten Umfang in einem mittleren Querschnitt des Querträgers 1 kleiner als das Verhältnis einer zweiten Fläche und einem zweiten Umfang in den beiden Endbereichen ist. Die verbreiterte und abgeflachte Ausgestaltung der Endbereiche ermöglicht, entsprechend dem ersten Ausführungsbeispiel, eine momentensteife Anbindung.According to a variant not shown in the drawing, the half-shells have a cross-rib-like plastic structure, as described, for example, in DE 100 65 219 C1 or DE 101 25 559 A1. The plastic structure is molded onto the respective metal structure and serves to stiffen the cross member. Otherwise, the configuration of the cross member corresponds to that of the first exemplary embodiment described above. FIG. 8 shows the cross section of an end region of a tubular extruded profile, which forms a cross member 1 according to the second exemplary embodiment, before and FIG. 9 after the forming. The central, significantly larger area of the cross member 1 remains unchanged in its circular cross section. Each of the two end regions has two straight regions running essentially parallel to one another and two regions connecting these straight regions in a radius, so that the ratio of a first area and a first circumference in a central cross section of the cross member 1 is smaller than the ratio of a second one Area and a second perimeter in the two end areas. The widened and flattened configuration of the end regions enables, in accordance with the first exemplary embodiment, a torque-resistant connection.
Zur Begrenzung einer Verformung der Endbereiche durch zu große Kraft- einwirkung, beispielsweise von Montageschrauben, sind gemäß der in Fig. 11 dargestellten Variante des zweiten Ausführungsbeispiels Stützkörper 7, vorliegend in Form von Hülsen, vorgesehen, welche in Verlängerung von Montagebohrungen, die in den Endbereichen zwecks Anbringung des Querträgers 1 vorgesehen sind, im Innenraum des Querträgers 1 angeordnet sind. Die Form des Querträgers 1 entspricht der des zuvor beschrieben zweiten Ausführungsbeispiels.To limit deformation of the end regions due to excessive force, for example assembly screws, support bodies 7, in the form of sleeves, are provided according to the variant of the second embodiment shown in FIG. 11, which extend in the form of sleeves in the end regions are provided for the purpose of attaching the cross member 1 are arranged in the interior of the cross member 1. The shape of the cross member 1 corresponds to that of the second embodiment described above.
Fig. 12 zeigt den Querschnitt eines verbreiterten und abgeflachten Endbereichs eines Querträgers 1 gemäß dem dritten Ausführungsbeispiel. Das Ausgangsmaterial hierfür entspricht dem in Fig. 8 dargestellten Strangpressprofil. Auch dieses ist in beiden Endbereichen des Querträgers 1 derart umgeformt, dass das Verhältnis einer ersten Fläche und einem ersten Umfang in einem mittleren Querschnitt des Querträgers 1 kleiner als das Verhältnis einer zweiten Fläche und einem zweiten Umfang in den beiden End- bereichen ist. Hierbei sind in beiden Endbereichen auf jeweils einer der beiden abgeflachten Seiten zwei sich in Längsrichtung des Querträgers 1 er- streckende in den Innenraum des Querträgers 1 ragende Vertiefungen vorgesehen, welche zur Erhöhung der Steifigkeit dienen.12 shows the cross section of a widened and flattened end region of a cross member 1 according to the third exemplary embodiment. The starting material for this corresponds to the extruded profile shown in FIG. 8. This is also reshaped in both end regions of the cross member 1 such that the ratio of a first surface and a first circumference in a central cross section of the cross member 1 is smaller than the ratio of a second surface and a second circumference in the two end regions. In this case, two in the longitudinal direction of the cross member 1 are in each of the two flattened sides in both end regions. extending into the interior of the cross member 1 provided depressions which serve to increase the rigidity.
Fig. 13 zeigt den Endbereich eines Querträgers 1 gemäß dem vierten Aus- führungsbeispiel, welcher mittels Umformen ausgehend von einem hohlzylindrischen Profil, welches im Mittelbereich des Querträgers 1 erhalten ist, derart abgeflacht ausgebildet ist, dass zwei Hohlräume an den äußeren Enden jedes Endbereichs ausgebildet sind, die von einem Bereich unterteilt sind, in dem die beiden Seitenwände gerade ausgebildet sind und aneinan- der anliegen.13 shows the end region of a cross member 1 according to the fourth exemplary embodiment, which is flattened by means of forming starting from a hollow cylindrical profile which is obtained in the central region of the cross member 1 in such a way that two cavities are formed at the outer ends of each end region , which are divided by an area in which the two side walls are straight and abut one another.
Fig. 14 zeigt ein Strangpressprofil in Rohrform mit sich nach innen erstrek- kenden, in Längsrichtung verlaufenden Rippen 8. Dieses wird zur Bildung der Endbereiche des Querträgers 1 entsprechend dem zweiten Ausfüh- rungsbeispiel umgeformt, wodurch sich die in Fig. 15 dargestellte Ausgestaltung ergibt. Die Rippen 8 können bei entsprechender Umformung gleichzeitig als Stützelemente dienen, die einen Mindestabstand der Wände sicherstellen und ein Zusammenbrechen der Statik beim Verschrauben eines Bauteils verhindern. Ferner können bei entsprechender Ausgestaltung der Rippen 8 diese auch als Luftleitelemente und/oder der Positionierung von im Querträger 1 verlaufenden Leitungen dienen. Dabei sind Schraubbefestigungen für den Querträger 1 insbesondere etwa mittig zwischen zwei an einander gegenüberliegenden Seiten angeordneten Rippen 8 angeordnet. Gemäß einer nicht in der Zeichnung dargestellten Abwandlung sind lediglich zwei Rippen vorgesehen, die im umgeformten Zustand im entsprechenden Endbereich benachbart zur Schraubbefestigung angeordnet sind. Dabei ist die Schraubbefestigung insbesondere möglichst dicht benachbart zwischen Rippe und Schmalseite des Endbereichs angeordnet, so dass auf Stützele- mente verzichtet werden kann. Das sechste und siebte Ausführungsbeispiel betrifft einen Querträger 1 aus zwei wannenartigen Halbschalen 2 und 3 mit in Längsrichtung verlaufenden, sich nach außen erstreckenden Rändern. Die Halbschalen 2 und 3 bestehen aus je einem Walzprofil oder Tiefziehteilen. Fig. 16 zeigt hierbei den unver- formten mittleren Bereich der jeweiligen Querträger 1 , welcher sechseckig mit etwa gleichen Seitenl ngen (wabenartig) ausgebildet ist.14 shows an extruded profile in the form of a tube with ribs 8 extending inwards and running in the longitudinal direction. This is deformed to form the end regions of the cross member 1 in accordance with the second exemplary embodiment, which results in the configuration shown in FIG. 15. The ribs 8 can, at the same time, be used as supporting elements, which ensure a minimum distance between the walls and prevent the statics from collapsing when a component is screwed together. Furthermore, with a corresponding design of the ribs 8, these can also serve as air guiding elements and / or the positioning of lines running in the cross member 1. Screw fastenings for the cross member 1 are in particular arranged approximately centrally between two ribs 8 arranged on opposite sides. According to a modification not shown in the drawing, only two ribs are provided which, in the deformed state, are arranged in the corresponding end region adjacent to the screw fastening. The screw fastening is in particular arranged as close as possible between the rib and the narrow side of the end region, so that support elements can be dispensed with. The sixth and seventh exemplary embodiment relates to a cross member 1 comprising two trough-like half-shells 2 and 3 with longitudinally extending, outwardly extending edges. The half-shells 2 and 3 each consist of a rolled section or deep-drawn parts. 16 shows the undeformed central region of the respective cross member 1, which is hexagonal with approximately the same side lengths (honeycomb-like).
Gemäß dem in Fig. 17 dargestellten sechsten Ausführungsbeispiel sind die Endbereiche derart umgeformt, dass die Bodenflächen der Halbschalen 2 und 3 näher zueinander angeordnet sind als im unverformten Zustand, jedoch ist zwischen den Bodenflächen noch ein Abstand vorgesehen.According to the sixth exemplary embodiment shown in FIG. 17, the end regions are shaped in such a way that the bottom surfaces of the half-shells 2 and 3 are arranged closer to one another than in the undeformed state, but there is still a distance between the bottom surfaces.
Gemäß dem in Fig. 18 dargestellten siebten Ausführungsbeispiel sind die Endbereiche derart umgeformt, dass zwei wabenartige Bereiche ausgebildet sind, die etwas voneinander beabstandet sind.According to the seventh exemplary embodiment shown in FIG. 18, the end regions are reshaped in such a way that two honeycomb-like regions are formed which are spaced somewhat apart from one another.
In beiden Fällen sind die Endbereiche abgeflacht und verbreitert ausgebildet, so dass diese Bereiche versteift sind. Im Folgenden werden unter Bezugnahme auf die Figuren 19 bis 24 verschiedene der Abstandswahrung dienenden Stützelemente näher erläutert, insbesondere bei aus zwei Halbschalen bestehenden Querträgern. Fig. 19 zeigt eine Draufsicht auf ein erstes hohlzylindrisch ausgebildetes Stützelement mit geschlossenem Profil, wie es beispielsweise mittels Abtrennen ei- nes durchgehenden Rohrprofils hergestellt werden kann, und Fig. 20 zeigt eine Draufsicht auf ein zweites hohlzylindrisch ausgebildetes Stützelement mit auf einer Seite offenem Profil.In both cases, the end areas are flattened and widened, so that these areas are stiffened. Various supporting elements serving to maintain the distance are explained in more detail below with reference to FIGS. 19 to 24, in particular in the case of cross members consisting of two half-shells. FIG. 19 shows a plan view of a first hollow-cylindrical support element with a closed profile, as can be produced, for example, by cutting off a continuous tubular profile, and FIG. 20 shows a plan view of a second hollow-cylindrical support element with a profile that is open on one side.
Fig. 21 zeigt ein Stützelement, das für zwei Stützstellen ausgebildet ist. Hierbei sind zwei geschlossene hohlzylindrische Bereiche über einen durchgehenden Zwischenbereich verbunden, so dass der Zwischenbereich eine zusätzliche versteifende Funktion erfüllen kann. Fig. 22 zeigt ein Stützelement, das ebenfalls für zwei Stützstellen geeignet ist, wobei es sich um ein seitlich offenes Profil handelt, das lediglich mittels des Anziehens der Schrauben zwischen den Innenwänden des Querträgers gehalten wird. Zur Aufnahme der Schrauben sind zwei U-förmige Bereiche in diesem beispielsweise als Strangpresselement, Walzprofil-Abschnitt, Abkant- oder Biegeteil ausgebildeten Teil vorgesehen. Fig. 23 zeigt ein Vierkantprofil mit quer verlaufenden Bohrungen zur Aufnahme der Schrauben, welches als Stützelement dient. Fig. 24 zeigt ein Gussteil, welches dem Stützelement von Fig. 21 entspricht. Hierbei kann es sich beispielsweise um ein reines Kunststoffteil oder ein Kunststoffteil handeln, in dem zwei Metallhülsen eingespritzt sind. Ferner können in solche Bauteile weitere Funktionen integriert sein, wie zum Beispiel das Umlenken der Luft zu Seitenauslässen.21 shows a support element which is designed for two support points. Here, two closed hollow cylindrical areas are connected via a continuous intermediate area, so that the intermediate area is one can perform additional stiffening function. Fig. 22 shows a support element, which is also suitable for two support points, which is a laterally open profile, which is held between the inner walls of the cross member only by tightening the screws. To accommodate the screws, two U-shaped areas are provided in this part, which is designed, for example, as an extruded element, rolled profile section, bent or bent part. Fig. 23 shows a square profile with transverse bores for receiving the screws, which serves as a support element. FIG. 24 shows a casting which corresponds to the support element from FIG. 21. This can be, for example, a pure plastic part or a plastic part in which two metal sleeves are injected. Further functions can also be integrated into such components, such as, for example, deflecting the air to side outlets.
Fig. 25 zeigt einen Schnitt durch einen Endbereich eines Querträgers 1 , welcher drei sich in Längsrichtung des Querträgers 1 erstreckende Hohlräume aufweist, die durch Anlagebereiche der beiden den Querträger 1 bildenden Halbschalen 2 und 3 voneinander getrennt sind. Im Bereich der beiden äußeren Hohlräume sind Bohrungen vorgesehen, durch die jeweils eine der Befestigung dienende Schraube gesteckt ist (nur links dargestellt). Die Halbschale 2 ist im mittleren Bereich mit einem Index 9 in Noppenform und die Halbschale 3 mit einem Index 10 in Durchzugsform versehen.25 shows a section through an end region of a cross member 1 which has three cavities which extend in the longitudinal direction of the cross member 1 and which are separated from one another by contact areas of the two half-shells 2 and 3 forming the cross member 1. Bores are provided in the area of the two outer cavities, through which a screw serving for fastening is inserted (only shown on the left). The half-shell 2 is provided with an index 9 in the shape of a knob in the central region and the half-shell 3 with an index 10 in a continuous form.
Die Flanken der seitlichen Hohlräume in den Endbereichen sollten möglichst steil stehen und nur geringen Abstand zur benachbarten Schraube aufweisen. Dadurch können die seitlichen Wände links und rechts der Schraube die Funktion des Stützkörpers übernehmen, so dass gegebenenfalls auf Stützelemente, wie in den Figuren 19 bis 24 dargestellt, verzichtet werden kann. Eine etwas längere Schraube ergibt eine bessere Verspannung der Verbindung als bei einem dünnen Flansch und kurzer Schraube. BezugszeichenlisteThe flanks of the side cavities in the end areas should be as steep as possible and only a short distance from the neighboring screw. As a result, the side walls to the left and right of the screw can take over the function of the support body, so that support elements, as shown in FIGS. 19 to 24, can optionally be dispensed with. A slightly longer screw results in better tensioning of the connection than with a thin flange and short screw. LIST OF REFERENCE NUMBERS
10 1 Querträger 2 erste Halbschale 3 zweite Halbschale 4 Öffnung 5 Lenksäule10 1 cross member 2 first half shell 3 second half shell 4 opening 5 steering column
15 6 Strangpressprofil 7 Stützkörper 8 Rippe 9 Index 10 Index -20 15 6 extruded profile 7 support body 8 rib 9 index 10 index -20

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Querträger (1), insbesondere für ein Kraftfahrzeug, wobei der Querträger (1 ) in einem mittleren Bereich einen ersten Querschnitt mit einer ersten Fläche und einem ersten Umfang und in mindestens einem seiner beiden Endbereiche einen zweiten Querschnitt mit einer zweiten Fläche und einem zweiten Umfang aufweist, dadurch gekennzeichnet, dass das Verhältnis von erster Fläche zu erstem Umfang größer als das Verhältnis von zweiter Fläche zu zweitem Umfang ist.1. cross member (1), in particular for a motor vehicle, the cross member (1) having a first cross-section with a first surface and a first circumference in a central region and a second cross-section with a second surface and a second in at least one of its two end regions Has circumference, characterized in that the ratio of the first surface to the first circumference is greater than the ratio of the second surface to the second circumference.
2. Querträger nach Anspruch 1 , dadurch gekennzeichnet, dass der Querträger (1 ) in mindestens einem seiner Endbereiche abgeflacht ausge- bildet ist.2. Cross member according to claim 1, characterized in that the cross member (1) is flattened in at least one of its end regions.
3. Querträger nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Querträger (1 ) in mindestens einem seiner Endbereiche breiter als in seinem mittleren Bereich ausgebildet ist.3. Cross member according to claim 1 or 2, characterized in that the cross member (1) is formed wider in at least one of its end regions than in its central region.
Querträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Querträger zwei Halbschalen (2, 3) aufweist, die miteinander verbunden sind. Cross member according to one of the preceding claims, characterized in that the cross member has two half-shells (2, 3) which are connected to one another.
5. Querträger nach Anspruch 4, dadurch gekennzeichnet, dass die Halbschalen (2, 3) Tiefzieh-, Strangpress- oder Walzprofile sind, von denen zumindest eine zumindest in einem ihrer Endbereiche umgeformt ist.5. Cross member according to claim 4, characterized in that the half-shells (2, 3) are deep-drawn, extruded or rolled profiles, at least one of which is formed at least in one of its end regions.
6. Querträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in mindestens einem Endbereich mindestens ein Stützkörper (7) im Innenraum des Querträgers (1) angeordnet ist.6. Cross member according to one of the preceding claims, characterized in that at least one support body (7) is arranged in the interior of the cross member (1) in at least one end region.
7. Querträger nach Anspruch 6, dadurch gekennzeichnet, dass der Stütz- körper (7) durch eine Hülse gebildet ist.7. Cross member according to claim 6, characterized in that the support body (7) is formed by a sleeve.
8. Querträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in mindestens einem Endbereich auf mindestens einer der beiden abgeflachten Seiten des Querträgers (1 ) zwei oder mehr sich in Längsrichtung des Querträgers (1) erstreckende und in den Innenraum des Querträgers (1) ragende Vertiefungen vorgesehen sind.8. Cross member according to one of the preceding claims, characterized in that in at least one end region on at least one of the two flattened sides of the cross member (1) two or more extending in the longitudinal direction of the cross member (1) and in the interior of the cross member (1) projecting depressions are provided.
9. Querträger nach einem der vorhergehenden Ansprüche, dadurch ge- kennzeichnet, dass in mindestens einem Endbereich beidseitig der beiden abgeflachten Seiten des Querträgers (1 ) Flanken vorgesehen sind, die in einem Winkel von ca. 80 bis 100° zu den abgeflachten Seiten angeordnet sind. 9. Cross member according to one of the preceding claims, characterized in that flanks are provided in at least one end region on both sides of the two flattened sides of the cross member (1), which are arranged at an angle of approximately 80 to 100 ° to the flattened sides ,
10. Querträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Querträger (1) in Längsrichtung verlaufende Rippen (8) aufweist.10. Cross member according to one of the preceding claims, characterized in that the cross member (1) has ribs (8) extending in the longitudinal direction.
11. Querträger nach Anspruch 10, dadurch gekennzeichnet, dass der Querträger (1 ) mindestens zwei, insbesondere genau zwei oder genau vier Rippen (8) aufweist. 11. Cross member according to claim 10, characterized in that the cross member (1) has at least two, in particular exactly two or exactly four ribs (8).
12. Querträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Querträger (1) einen Hohlraum zum Durchführen eines Mediums aufweist.12. Cross member according to one of the preceding claims, characterized in that the cross member (1) has a cavity for carrying a medium.
13. Querträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Querträger (1) in seinem Innenraum versteifende Elemente aufweist.13. Cross member according to one of the preceding claims, characterized in that the cross member (1) has stiffening elements in its interior.
14. Querträger nach Anspruch 13, dadurch gekennzeichnet, dass die versteifenden Elemente durch mindestens eine Kunststoffstruktur gebildet sind.14. Cross member according to claim 13, characterized in that the stiffening elements are formed by at least one plastic structure.
15. Querträger nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass die versteifenden Elemente durch kreuzförmig verlaufende Rippen oder wabenartige Strukturen gebildet sind. 15. Cross member according to claim 13 or 14, characterized in that the stiffening elements are formed by cross-shaped ribs or honeycomb structures.
PCT/EP2005/002791 2004-03-17 2005-03-16 Cross member or structural component for a motor vehicle WO2005090145A1 (en)

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US10/592,507 US20070194605A1 (en) 2004-03-17 2005-03-16 Cross member or structural component for a motor vehicle
EP05716111A EP1730016B1 (en) 2004-03-17 2005-03-16 Cross member or structural component for a motor vehicle

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DE502005004941D1 (en) 2008-09-18
US20070194605A1 (en) 2007-08-23

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